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Introduction to Salesforce DEX-450 Exam

This qualification concentrates on the programmer's validation of abilities, such as the programming of programs. Salesforce DEX-450 certification acknowledges that the applicant has the potential to conform his / her Salesforce applications to the heart of the Pinnacle programming language and the visual power diagram. The credential offers a better indicator of the competences which you have established to provide prospective employers. Professionals need to gain functional expertise in constructing and programming data objects (sObjectiles) to retrieve, modify and store data from these objects. Specify custom logic with Apex triggers and classes and use the built-in testing system to test this logic. This Guide covers all facets of the DEX-450 Test, the salary of the accredited specialist Salesforce DEX-450 and all the aspects of the Salesforce DEX-450 certification.

The Salesforce DEX-450 exam is a competency qualification test that acknowledges your capability growth. You need industry expertise to attempt the test. Professionals should execute the following duties following certification:

  • Describe a range of the main features of multi-tenant programme architecture
  • Develop programmatic implementations that benefit from declarative personalizations
  • Using a declarative GUI to build and change subjects
  • Using the combined Apex and Visual Powers evaluation system.
  • Describe how the trigger code functions in the Save Execution Order
  • Write Visualforce and code for user interface setup
  • Write customizations of business logic using triggers and classes from Apex. SOQL and DML are used with these customizations.

Reference: https://trailhead.salesforce.com/en/academy/classes/dex450-build-applications-programmatically-on-the-salesforce-platform/

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What is the duration, language, and format of Salesforce DEX-450 Exam

  • Certification Validity period : 3 years.
  • This exam is offered in only English.
  • This exam consists of 85 questions
  • Passing score 80%
  • The type of questions is Multiple Choice and situation-based questions.
  • There is a time limit of 120 minutes for the exam.

The validity of the Salesforce DEX-450 certification is three years.

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Salesforce DEX-450 Exam Syllabus Topics:

SectionObjectives
Visualforce Development- UI components
  • 1. Visualforce components and expressions
    - Pages and controllers
    • 1. Standard controllers
      • 2. Custom controllers and extensions
        Apex Triggers and Automation- Trigger design patterns
        • 1. Bulkified trigger design
          • 2. Before and after triggers
            - Order of execution
            • 1. Salesforce transaction lifecycle
              Apex Programming Fundamentals- Apex syntax and object-oriented concepts
              • 1. Access modifiers and encapsulation
                • 2. Classes, methods, and variables
                  - Collections and data handling
                  • 1. Iteration and data manipulation
                    • 2. Lists, Sets, and Maps
                      Database and SOQL/SOSL- DML operations
                      • 1. Bulk operations and limits
                        • 2. Insert, update, delete, upsert
                          - SOQL queries
                          • 1. Relationship queries
                            • 2. Basic and advanced query filtering
                              Security and Best Practices- Governor limits
                              • 1. Avoiding limit exceptions
                                - Security model
                                • 1. CRUD and FLS enforcement
                                  • 2. Sharing rules and with sharing keyword
                                    Testing and Debugging- Apex testing framework
                                    • 1. Code coverage requirements
                                      • 2. Test classes and methods
                                        - Debugging techniques
                                        • 1. System debug logs

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